科研之友
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摘要
The elaboration of smart materials with optical fiber sensors embedded into several dissimilar layers is capable of monitoring various system parameters inside the layered structure without damaging the host structure itself. This work mainly concentrates on the thermal elaboration process used to embed optical fibers into ceramic coating layers and their characterization. A new mechanical holder is first proposed in order to maintain the optical fiber during the thermal spray process and protect it from the strong atmospheric turbulence caused by the heat flux. Wire flame thermal spray where particles are propelled on the substrate at a temperature of more than 2000 degrees C is chosen as the elaboration process and the favorable elaboration conditions are evaluated. The microscopic characteristics of both the surface and cross-section of the embedding structure are evaluated, and the mechanical adhesion strength of the embedded optical fiber is then measured and discussed. The results show that the optical fiber remains undamaged after the thermal spray process and keeps perfect adhesion with the ceramic coating, making the former a competitive method to elaborate the embedded hybrid structure.
- 出版日期2015-3
